horological rubber
1850-1900
1850-1900
1857-1870
1861-1866
1864-1900
circa 1861
1862
after 1903
1850-1859
1895
1855
1870
circa 1900
1878
circa 1900
1903
1902
1850-1900
circa 1880
1900
1875
1884
1860
1850
1901
circa 1885
1895
1896
1906
1902
1898
1901
circa 1905
1886
1906
1858
1896
1858-03-02
1865-1866
1860-1900
1854
1851-1900
1904
1858
1875
1901
1870-1890
1885
1858
1870-1880
1898